Steam valve gear



May 20, 1930. J HELENBERG 1,759,399

STEAM VALVE GEAR a'iled'nu so, 1926 2 Sheets- Sheet 1 Inventor u'fifm/flak/792g,

Attorney y 1930- J. HELENBERG 1,759,399

STEAM VALVE GEAR Filed Aug. :50. 1926 2 Sheets-Sheet 2 Inventor Attorneytherein.

Patented May 20, 1930,

PATENT OFFIcE JOHN HELENBERG, OF HOUSTON, TEXAS STEAM VALVE GEARApplication filed August 30, 1926. Serial No. 132,527.

The present invention relates to a steam valve gear and has for itsprime object to provide an improvement over the steam gear that is usedon the Worthington feed water heater and pump an'dfover any other steamactuated valve gear known in the art.

Another important purpose and object of the invention is to reduce thefirst cost and the cost of the annual maintenance and furthermore toincrease the reliability and simplicity by eliminating all unnecessaryplungers, cylinders, slide valves, and ports.

With the above and numerous other objects in View as 'will appear as thedescription proceeds, the invention resides in certain novel features ofconstruction, and in the combination and arrangement of parts as will behereinafter more fully described and claimed.

In the drawings:

Figures 1, 2 and 3 are sectional views showing the parts of the deviceindifi'erent positions,

Figure 4 is an elevation of the casing for the slide valve,

Referring to the drawings in'detail, it will be seen that the letter Crepresents a cylinder with a piston P mounted for reciprocation Thiscylinder is provided with ports 1, 2, 3, 4, 5 and 6, orts 1, 3 and5being grouped at the top of t 1e cylinder and ports 2, 4 and 6 beinggrouped at the bottom of the cylinder. Conduits, 1, 2, 3, 4, 5 and 6lead respectively from ports 1, 2, 3, 4, 5 and 6. The conduits 3 and 4"are branches of conduits 5 and-6 'respectively. Conduits 1", 2", 5 and 6lead to ports provided in a valve casing 8. The ports ofthe casing areshown to advantage in Fig. 4 and include ports 9 and 10 from which leadconduits-9 and 10 respectively to exhausts E and E. The casing-8 isfurther provided with ports 5 and 6 communicating with conduits '5 and 6respectively. The casing has ports 11 and 12 communicatingwith conduits11 and 12 respectively leading to exhausts E and E respectively. Thecasing 8 isprovided w th ports 1 and 2" communicating with conduits 1and 2" respectively. At the center the easing 8is provided with theports from wlnch lead conduits 7 to theintake I. A valve V is meral'25while the chamber between the enlargement 14 and the enlargement 16 isdenoted bythe numeral 26. The chamber in which the auxiliary valve 17operates is denoted by the numeral'27 and the chamber in which the otherauxiliary valve 18operates is denoted by the numeral 28. v

From the above detailed description of the parts a clear understandingmay be had of the operation of the device. The main positions of thevalve V and the auxiliary valves 17 and 18 have been illustrated inFigs. 1, 2

i and 3. Supposing the parts to be located as shown in, Fig.- 1, and thepiston P moving from top to bottom it will be seen that the steam fromthe intake I passes through the conduit 7, ports 7*, chamber 25, conduit1" and port 1 to the top of the cylinder thereby forcing the pistondownwardly. The steam is further being exhausted through port 2,-conduit 2, port 2', chamber 26, conduit 12, to exhaust E. lVhen thepiston approaches the bottom end of the cylinder C it will successivelyclose ports 6 and 4 but when it reaches the bottomof the cylinder port 6will be opened as is clearly illustrated in Fig. 2 whereby the livesteam coming from the port 1 will pass through the port 6, conduit 6into chamber 28 and will build up a pressure therein so as to cause thevalve V to move upwardly to the position shown inv Fig. 2 which willcause the closing of exhaust port 12 andwill close all communication ofport 7 b with chamber 25 and communicate port 7 with chamber 26. Theenlargement 15 passes by the port 11 and communicates it with thechamber 25. It will therefore be seen that the live steam from theintake I will pass through the conduit 7 port 7 chamber 26, conduit 2*,and ort 2 to the bottom of the cylinder C therehy moving the piston Pupwardly and the exhaust steam will pass through port 1, conduit 1, port.1, chamber 25, port 11*, conduit 11 to the exhaust E. As

"the piston moves upwardly it will reach the position shown in Fig. 3 sothat a portion of the live steam will pass through branch 4 conduit 6and expand in chamber 28 so as to move the valve V still furtherupwardly to the position shown in Fig. 3, thereby causing theenlargement to engage the aux:

iliary valve lLand move it upwardly to close port 9 the same asauxiliary valve 18 closes port 10 in Fig.1.

I have described one cycle of operationtioned ports, control valves forassociation with the end ports, a pair of headed pins on which thecontrolvalves are slidable, said pins engaging the first mentioned valveat the ends thereof, said control valves having which will clearlydemonstrate the movement of the parts, particular attention being Icalled to the fact that the auxiliary valves are shifted by the heads ofthe bolts 19 and 20 and the enlarged portions 15 and 16. Thus theauxiliary valve 18 is shifted from the position shown in Fig. 2 to thatshown in Fig. 3 by the bolt 20. This steam valve gear is of the enclosedtype and is entirely steam actuated. The entire mechanism consists ofthree moving parts'which cause the movement of the piston P, namely amain steam valve V and' the two control or auxiliary valves 17 and 18Which control the admission and exhaust of steam to the ends of the mainsteam valve. The main steam valve V and the two control valves 17 and 18are of the piston type and all are the same in size and function in thesame control unit casing or bushing 8.

' It is thought that the construction, operation, and advantages of thisimprovedstructnre will now be understood by'those skilled in this artwithout a more detailed descript-ion thereof. The resent embodiment ofthe invention has been disclosed in detail WllJllOIlt departing from thespirit or scope .I claim. as new is: v

In combination, a cylinder, a piston in r the eylinder,'said cylinderhaving a port at merely by Way'of example, sincein actual practice itattains the features of advantage enumerated as desirable in the satement of a the invention and the above des ription.v It will beapparent that changes in the details of construction, and in thecombination and arrangement of parts may be resorted to of the inventionas hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what eachend, a bushing casinghaving a pair of longitudinally spaced ports at each end, a port at thecenter thereof and a pair of orts between the center port and each pair0 end orts a slide valve in the vbushin casin 7 b D having acentralenlargement associated with I the central port, enlargements at the endsof the valve for association with the third men-

